Résumé
Most development projects in northern Ivory Coast require good water resource management. Rainfall-runoff modelling was performed in 20 catchments (100–4500 km
2) to provide reliable tools for the assessment of water supply in the sudanese savannah area. After the calibration of two conceptual models (GR3 and CREC), the parameters were characterized so that these models could be applied to ungauged catchments. Predetermination equations were established using variables related to the catchment land use and the rainfall distribution over the year. The GR3 model produced good results although further work is needed to improve the reliability of the equations before operational use.